Re: [Linuxptp-devel] phc2sys, timemaster: stale/bad receive time /w ptp4l using 2 ethernet interfaces

[Stefan L. <s....@ga...>]

Hello Richard,

these are the respective outputs:

root@cp61850:~# pmc -u -b 0 'GET TIME_PROPERTIES_DATA_SET'
sending: GET TIME_PROPERTIES_DATA_SET
        00d093.fffe.274a5e-0 seq 0 RESPONSE MANAGEMENT
TIME_PROPERTIES_DATA_SET
                currentUtcOffset      37
                leap61                0
                leap59                0
                currentUtcOffsetValid 0
                ptpTimescale          1
                timeTraceable         0
                frequencyTraceable    0
                timeSource            0xa0

root@cp61850:~# pmc -u -b 0 'GET PORT_DATA_SET'
sending: GET PORT_DATA_SET
        00d093.fffe.274a5e-1 seq 0 RESPONSE MANAGEMENT PORT_DATA_SET
                portIdentity            00d093.fffe.274a5e-1
                portState               SLAVE
                logMinDelayReqInterval  0
                peerMeanPathDelay       0
                logAnnounceInterval     1
                announceReceiptTimeout  3
                logSyncInterval         0
                delayMechanism          1
                logMinPdelayReqInterval 0
                versionNumber           2
        00d093.fffe.274a5e-2 seq 0 RESPONSE MANAGEMENT PORT_DATA_SET
                portIdentity            00d093.fffe.274a5e-2
                portState               LISTENING
                logMinDelayReqInterval  0
                peerMeanPathDelay       0
                logAnnounceInterval     1
                announceReceiptTimeout  3
                logSyncInterval         0
                delayMechanism          1
                logMinPdelayReqInterval 0
                versionNumber           2

root@cp61850:~# date
Wed Mar 22 07:55:46 UTC 2017

root@cp61850:~# phc_ctl /dev/ptp0 get
phc_ctl[660.715]: clock time is 1490169383.798251169 or Wed Mar 22
07:56:23 2017


With ptp4l only working with one ethernet interface,
TIME_PROPERTIES_DATA_SET is identical:

root@cp61850:~# pmc -u -b 0 'GET TIME_PROPERTIES_DATA_SET'
sending: GET TIME_PROPERTIES_DATA_SET
        00d093.fffe.274a5f-0 seq 0 RESPONSE MANAGEMENT
TIME_PROPERTIES_DATA_SET
                currentUtcOffset      37
                leap61                0
                leap59                0
                currentUtcOffsetValid 0
                ptpTimescale          1
                timeTraceable         0
                frequencyTraceable    0
                timeSource            0xa0


Best regards,

Stefan


Am 21.03.2017 um 12:48 schrieb Richard Cochran:
> If I understood correctly, then in your setup phc2sys will use the
> UTC/TAI offset provided by the GM...
>
> On Tue, Mar 21, 2017 at 08:37:49AM +0100, Stefan Lange wrote:
>> ptp4l correctly syncs /dev/ptp0 to one of the grandmaster clocks:
>>
>> root@cp61850:/var/log# pmc -u -b 0 'GET PORT_DATA_SET'
> What do you see when you query TIME_PROPERTIES_DATA_SET ?
>
> Thanks,
> Richard
>

-- 

Stefan Lange
Entwicklung

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